Rosie O'Donnell Says She's Seen Broadway's 'Hamilton' 12 Times

She and James Corden also know all the lyrics to the hip-hop musical based on Alexander Hamilton.

Haven't seen Hamilton yet? Well, Rosie O'Donnell has seen it on Broadway … 12 times.

"It is by far the best thing I have ever seen in my life. ... If I could go once a week, I would," she told James Corden on Wednesday's episode of The Late Late Show. "It's like going to church for me."

O'Donnell, who has previously hosted the Tonys three times, also told the upcoming host of the awards show to simply rehearse awarding all the honors to Lin-Manuel Miranda's hip-hop musical based on Alexander Hamilton and the founding fathers.

And after Corden noted that he listens to his original cast album during his daily work commute (Hamilton Carpool Karaoke, anyone?), the two then went on to rap the first verse of the opening number.